离子交换树脂处理三乙胺废水.pdf

化
环保
2015年第35卷第5期
ENVIRONMENTAL PROTECTION OF CHEMICAL INDUSTRY
离子交换树脂处理三乙胺废水
朱晓燕'2,孙贤波',唐琪玮'2
(1.华东理工大学资源与环境工程学院,上海200237;
2.国家坏境保护化工过程环境风险评价与控制重点实验室,上海200237)
[摘要]采用离子交换树脂对废水中三乙胺进行吸附。探讨了静态及动态吸附三乙胺的影响因素,考察了树脂的
脱附条件及其吸附稳定性。实验结果表明:RX01型树脂对三乙胺的吸附性能优于HD-81型和D155型树脂;在三
乙胺初始质量浓度为1500mgL、初始pH为115、吸附时间为2h、吸附温度为298K的静态吸附条件下,三乙胺
去除率为96.3%,饱和吸附量为145mgg,等浓度条件下阳离子影响的大小顺序为Ca2'>Mg'>K'>Nat';当三
乙胺初始质量浓度为1500mgL、废水流量为60BVh、动态吸附柱高径比为5.37时,穿透体积为70BV,出水
乙胺质量浓度小于3mgL,三乙胺去除率高达99.5%;以2molL的HCI溶液为脱附剂,脱附剂流量为]BVh、出
水体积为4BV时,三乙胺的脱附率达94.8%;在最优动态吸附-脱附条件下重复使用10次,树脂性能稳定
「关键词]离子交换树脂;三乙胺废水;吸附;脱附
中图分类号]X703.1[文献标志码]A[文章编号]1006-1878(2015)05-0475-06
Treatment of Triethylamine-containing Wastewater with Ion Exchange Resin
Zhu Xiaoyan", Sun Xianbo", Tang Oi
iwe
(1. School of Resources and Environmental Engineering, East China University of Science and Technology
Shanghai 200237, China; 2. State Environmental Protection Key Laboratory of Environmental Risk Assessment
and Control on Chemical Process, Shanghai 200237, China)
Abstract: Triethylamine(TEA ) in wastewater was adored using ion exchange resin. The effects on static and dynamic
absorption to TEA were studied, and the desorption conditions and the absorption stability of resin were investigated
The experimental results show that: The adsorption capability of resin RX01 is better than those of resin HD-81 and
resin D155; Under the static absorption conditions of initial TE A mass concentration 1 500 m/, initial PH 11.5
adsorption time h and adotion mperature 298 K, e TEA removal rate is 6.3, the Static saturated adsorption
capacity is 145 mg, and te influence sequence of cations under the same concentration is a>M>K>Na
When the initial TEA mass concentration is 1 500 mg/L, the wastewater flow is 60 BV/h and the rario of height to
diameter of the dynamic absorption column is 5.37, the penetration volume is 70 BV, the mass concentration of TEA in
the effluent is less than 3 mg/L with 99. 5% of the removal rate; When 2 mol /L Hcl solution is used as desorption agent
with 1 BV/h of flow and the effluent volume is 4 B, the TEA desorption rate reaches 94. 8%o; Furthermore, under the
optimum conditions, the resin has good and stable performance after reused for 10 times
Key words: ion exchange resin; triethylamine-containing wastewater adsorption; desorption
三乙胺是一种有机溶剂,也是化工合成的重对于较低浓度的三乙胺废水,蒸馏回收法过程能
要原料,广泛应用于エ业生产制造。三乙胺使耗较大,经济效益低。树脂吸附法作为一种低能
用中产生的三乙胺废水是化工行业面临的一个重要
问题。三乙胺废水的处理方法主要包括吸附法、
焚烧法、化学氧化法、生化法和蒸馏回收法2-6
收稿日期]2015-05-26;[修订日期12015-07-12。
作者简介]朱晓燕(1990-),女,江苏省南通市人,硕士生,
其中,最常用的是蒸馏回收法?。蒸馏回收法适
电话132620901706,电邮a8103031220163.c0m。联系人:孙贤波,
用于高浓度三乙胺废水,能有效回收三乙胺;但电话の21-64252395,电邮メbsun(@ccust.edu.cn